DSI is a general term used to reference a simulation methodology using the tire and proving ground road surface approach.
The DSI method is a set of techniques used with an explicit, nonlinear, dynamic analysis program, which allows for the complete analysis of a mechanical system, including all joints, bushings, materials, and geometric non-linearities using an event-based analysis. The class of problems targeted is those in which a mechanical system is to be analyzed in a dynamic sense. In other words, when a mechanical system is in use, the displacements, forces, accelerations, and stresses occur in real-time. The DSI method allows for the calculation of all of these quantities simultaneously, using a single analysis run.